package com.frank.base;

import java.util.Stack;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;

/**
 * 应用程序Activity管理类：用于Activity管理和应用程序退出
 * @author Frank
 * @version 1.0
 * Create by 2016.1.27
 */
public class AppManager {

	private static Stack<Activity> activityStack;
	private static AppManager instance = new AppManager();

	private AppManager() {
		if(activityStack==null){
			activityStack = new Stack<Activity>();
		}else{
			activityStack.clear();
		}
	}

	/**
	 * 单一实例
	 */
	public static AppManager getAppManager() {
		return instance;
	}

	/**
	 * 添加Activity到堆栈
	 */
	public void addActivity(Activity activity) {
		activityStack.add(activity);
	}

	/**
	 * 获取当前Activity（堆栈中最后一个压入的）
	 */
	public Activity currentActivity() {
		Activity activity = activityStack.lastElement();
		return activity;
	}
	
	/**
	 * 判断是否含有某个Activity（堆栈中）
	 */
	public boolean isHaveActivity(Class<?> cls) {
		for (Activity activity : activityStack) {
			if (activity.getClass().equals(cls)) {
				return true;
			}
		}
		return false;
	}
	
	/**
	 * 结束当前Activity（堆栈中最后一个压入的）
	 */
	public void finishActivity() {
		Activity activity = activityStack.lastElement();
		finishActivity(activity);
	}

	/**
	 * 结束指定的Activity
	 */
	public void finishActivity(Activity activity) {
		if (activity != null) {
			activityStack.remove(activity);
			activity.finish();
		}
	}

	/**
	 * 结束指定类名的Activity
	 */
	public void finishActivity(Class<?> cls) {
		for (Activity activity : activityStack) {
			if (activity.getClass().equals(cls)) {
				finishActivity(activity);
			}
		}
	}

	/**
	 * 结束所有Activity
	 */
	public void finishAllActivity() {
		for (Activity activity : activityStack) {
			if(activity != null ) {
				activity.finish();
			}
		}
		activityStack.clear();
	}

	/**
	 * 退出应用程序
	 */
	@SuppressWarnings("deprecation")
	public void AppExit(Context context) {
		try {
			finishAllActivity();
			ActivityManager activityMgr = (ActivityManager) context
					.getSystemService(Context.ACTIVITY_SERVICE);
			activityMgr.restartPackage(context.getPackageName());
			System.exit(0);
		} catch (Exception e) {
		}
	}
}